First, he was charged with vampire capitalism. Now, Mitt Romney stands accused of forcing a laid-off employee to build what the employee calls “my own coffin.”

That’s the powerful closing line of a bold new ad from the top super PAC supporting President Obama, Priorities USA Action. The ad is the fourth in a series hitting Romney for job losses that occurred in companies taken over by the venture capital firm he founded, Bain Capital.

The grim ad features an interview with one man, Mike Earnest, who worked at a paper plant in Marion, Ind., that closed down. He talks about building a stage for reasons he didn’t understand and then having bosses take to the stage to announce that everyone was fired.

“Mitt Romney made over a hundred million dollars by shutting down our plant, and devastated our lives,” the man says. “Turns out that when we built that stage, it was like building my own coffin.”